JP2021120307A - Chain-type transport conveyor - Google Patents

Abstract

To provide a chain-type transport conveyor allowing for easily removing without resort to handwork the dust adhered to a surface area of an inner surface of a case where an object under conveyance being pushed and carried by a push plate of a chain is not to slide within the case.SOLUTION: A chain-type transport conveyor 11 comprises a case 12 whose inner surface includes a bottom surface 17, a ceiling surface 18 and left and right side surfaces 19, an endless chain 24 that circulates along a circulation passage including a passage portion lying along the bottom surface within the case, a push plate 28 that carries while pushing an object under conveyance W along the bottom surface when moving a lower passage portion 30 owing to a circulation of the chain in a state of being attached to the chain, and an air ejection part 40 that ejects, to another surface than the bottom surface of the inner surface of the case, air allowed to remove the dust of the object under conveyance adhered to the relevant surface.SELECTED DRAWING: Figure 1

Description

The present invention relates to a chain type conveyor capable of transporting an object to be transported such as powder or granular material.

Conventionally, as this type of chain type conveyor, a case conveyor provided with the cleaning device described in Patent Document 1 has been known. In this case conveyor, an endless chain with a push plate is arranged in a transport duct, which is a case having a rectangular cross section long in the left-right direction, and an object to be transported such as powder or granular material put into the transport duct is transferred to the chain. The push plate is used to push the chain in the circumferential direction while moving it for transportation. Further, in this case conveyor, the bottom surface of the transport duct is prevented from being left on the transport path surface when the object to be transported is transported in the transport duct by being pushed by the push plate of the chain. It is equipped with an air injection means capable of injecting air toward a certain transport road surface.

Japanese Unexamined Patent Publication No. 2007-62992

By the way, in the case conveyor as described above, dust that has been blown up during transportation of an object to be transported such as powder or granules may adhere to the inner surface of the transport duct. In this case, the dust adhering to the transport road surface, which is also the bottom surface of the transport duct, moves on the transport road surface while being pushed by the push plate and moves while sliding on the transport road surface. It can be removed from the surface of the transport road by the sliding object to be transported. However, in the case of dust adhering to the left and right side surfaces and the ceiling surface, which are the inner surfaces of the inner surface of the transport duct other than the transport road surface, which is also the bottom surface, the dust is pushed by the push plate against the surface area to which they are adhered. The moving object to be transported does not slide. Therefore, in the case of dust adhering to the side surface or ceiling surface in the transport duct where the transported object such as powder or granular material is transported, the operator must manually remove it, and improvement thereof is desired. rice field.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a surface region of the inner surface of the case where the object to be conveyed, which is pushed by the push plate of the chain and conveyed, does not slide. An object of the present invention is to provide a chain type conveyor that can easily remove adhering dust without manual operation.

Hereinafter, means for solving the above problems and their actions and effects will be described.
A chain-type conveyor that solves the above problems has a case in which the inner surface includes a bottom surface, a ceiling surface, and left and right side surfaces, and a case that orbits the inside of the case along a circuit path including a path portion along the bottom surface. An endless chain, a push plate that conveys an object to be conveyed while moving along the bottom surface when moving around the path portion of the chain while being attached to the chain, and a case of the case. An air injection unit that injects air that can remove dust of the object to be transported adhering to the inner surface other than the bottom surface is provided.

According to this configuration, air is supplied from the air injection portion to the inner surface of the inner surface of the case other than the bottom surface on which the object to be conveyed, which is pushed and conveyed by the push plate of the chain, slides, for example, the ceiling surface or the side surface. Be jetted. Therefore, even if dust that has soared in the case during transportation of the object to be transported adheres to the ceiling surface or side surface in the case, such dust is removed by the air injected from the air injection unit. Therefore, it is not necessary to manually remove the dust adhering to the ceiling surface and the side surface in the case later.

In the chain type conveyor, the air injection unit is such that the air is sprayed obliquely from one of the ceiling surface and the side surface other than the bottom surface, and then from one surface to the other. It is preferable that the injection direction of the air is set so that the air flows toward the surface of the air.

According to this configuration, dust adhering to two surfaces of the inner surface of the case, the ceiling surface and the side surface, can be removed by the air injected from the air injection portion shared by the two surfaces toward one surface.
In the chain type conveyor, the case is provided with a dust discharging portion that enables the dust to be discharged from the inside of the case, and the air injection portion is said after the air is blown to a surface other than the bottom surface. It is preferable that the injection direction of the air is set so that the dust discharge portion flows in the direction in which the dust discharge portion is located.

According to this configuration, the dust removed from the surface other than the bottom surface of the case by the air injected from the air injection part is blown in the case in the direction in which the dust discharge part is located along with the air flow. .. Therefore, the dust removed from the inner surface of the case by the air injected from the air injection portion can be discharged to the outside of the case by utilizing the air flow toward the dust discharge portion.

In the chain type transfer conveyor, when the side of the path portion in the case where the dust discharge portion is located is the rear side in the front-rear direction, the air injection portion is said to have the air with respect to the ceiling surface. It is preferable that the air injection direction is set so that the air is sprayed from a position diagonally downward and diagonally laterally in the front of the case from an oblique direction intersecting the front-rear direction, the left-right direction, and the up-down direction.

According to this configuration, the air blown diagonally downward from the front side and diagonally to the side of the ceiling surface in the case flows diagonally from the ceiling surface to the rear side, which is the downstream side, and reaches the side surface. After that, it flows further downstream along the side surface, or bounces diagonally from the side surface to the downstream side and is sprayed on the opposite side surface. Therefore, dust can be efficiently removed from the ceiling surface and side surfaces in the case by the air injected from the air injection unit, and the dust removed in this way can be removed from the air flowing through the case from the upstream side to the downstream side. By using it, it can be efficiently blown toward the dust discharge part.

In the chain type conveyor, the air injection portions are provided at a plurality of locations spaced apart in the direction in which the path portions extend on the left side surface and the right side surface, and are provided on the left side surface. It is preferable that the air injection portion of the above and a plurality of the air injection portions provided on the right side surface thereof are provided so as to be alternately positioned in the direction in which the path portion extends.

According to this configuration, when the side of the path portion in the case where the dust discharge portion is located is the downstream side, a plurality of air injection portions that inject air that can remove dust from the inner surface of the case are provided in the case. It can be efficiently arranged from the upstream side to the downstream side where the dust discharge portion is located.

According to the present invention, dust adhering to the surface region of the inner surface of the case where the object to be conveyed, which is pushed by the push plate of the chain and conveyed, does not slide, can be easily removed without manual work. can.

A partially broken side view schematically showing the overall structure of one embodiment of a chain type conveyor. FIG. 2 is a cross-sectional view taken along the line 2-2 in FIG. FIG. 2 is a cross-sectional view schematically showing a portion viewed along the line 3-3 in FIG. A plan sectional view schematically showing the flow of air when air is injected from all the air injection parts at the same time. A plan sectional view schematically showing an air flow when air is injected only from each air injection part on the left side. A plan sectional view schematically showing an air flow when air is injected only from each air injection part on the left side.

Hereinafter, an embodiment of the chain type conveyor conveyor will be described with reference to the drawings. In the following description, when indicating the front-back direction, the left-right direction, and the up-down direction, it is assumed that the direction shown in FIG. 1 or the like is used as a reference.

As shown in FIGS. 1 and 2, the chain type conveyor 11 has a case 12 having a horizontally long square tubular shape as a whole when viewed from the side. In the case 12, the first rotating shaft 13 along the left-right direction is rotatably supported at a position that is downward at the front end portion in the front-rear direction, which is the length direction thereof, with respect to the first rotating shaft 13. The first sprocket 14 is supported so as to rotate integrally. Further, in the case 12, a second rotating shaft 15 along the left-right direction is rotatably supported at a position at the rear end portion in the front-rear direction at the same height as the first rotating shaft 13, and the second rotating shaft is supported. A second sprocket 16 having the same diameter as the first sprocket 14 is supported so as to rotate integrally with the fifteenth sprocket 14.

The case 12 has a bottom surface 17 whose inner surface along the length direction, which is an inner surface other than the inner surface of the front end portion and the rear end portion, is a horizontal surface, a ceiling surface 18 which faces the bottom surface 17 in the vertical direction, and a bottom surface. It is configured to include left and right side surfaces 19 and 20, which are vertical surfaces connecting 17 and the ceiling surface 18. Further, in the case 12, a partition plate 21 which is a horizontal plate material is provided at a position intermediate between the first sprocket 14 and the second sprocket 16 in the vertical direction. The lower surface 22 of the partition plate 21 faces the bottom surface 17 of the case 12, while the upper surface 23 of the partition plate 21 faces the ceiling surface 18 of the case 12. That is, the lower surface 22 of the partition plate 21 is a ceiling surface for the internal space below the partition plate 21 in the case 12, and the upper surface 23 of the partition plate 21 is from the partition plate 21 in the case 12. Is also the bottom surface for the upper interior space.

Further, in the case 12, an endless chain 24 is wound between the first sprocket 14 and the second sprocket 16. The chain 24 has a pair of left and right inner link plates 25 arranged in parallel at regular intervals in the left-right direction and a pair of left and right outer links arranged in parallel at a wider interval in the left-right direction than the inner link plate 25. The plate 26 has a configuration in which the ends of the other link plates 25 and 26 adjacent to each other in the series direction are rotatably connected to each other by a connecting pin 27. Further, on each outer surface of the left and right inner link plates 25, push plates 28 having a rectangular shape when viewed from the front-rear direction are attached so as to project in the left-right direction.

Then, in the chain 24, a roller 29 rotatably supported by a connecting pin 27 between the left and right inner link plates 25 is formed on the outer periphery of the first sprocket 14 and the second sprocket 16 which rotate respectively. By engaging with the tooth portion, the sprockets 14 and 16 are configured to rotate in the case 12 as the sprockets rotate. That is, the chain 24 is inside the case 12 along a circular path including a lower path portion 30 which is a path portion along the bottom surface 17 of the case 12 and an upper path portion 31 which is a path portion along the upper surface 23 of the partition plate 21. Move around.

Further, on the upper wall portion 12a of the case 12, at a position closer to the second sprocket 16 than the intermediate position in the front-rear direction, a loading port that allows the transported object W such as powder or granular material to be charged into the case 12. 32 is formed. On the other hand, on the lower wall portion 12b of the case 12, a discharge port 33 is formed at a position on the front end side below the first sprocket 14 so that the object to be transported W can be discharged to the outside of the case 12. .. That is, the push plate 28 attached to the inner link plate 25 of the chain 24 so as to project to both the left and right sides is a slot when the lower path portion 30 of the orbital path moves in the front-rear direction as the chain 24 orbits. The object W to be transported, which is thrown into the case 12 from 32, is conveyed so as to be pushed out in the direction in which the push plate 28 moves. Then, the transported object W thus transported is discharged below the case 12 from the discharge port 33 at the front end.

Further, on the upper wall portion 12a of the case 12, a motor 34 for driving and rotating the first sprocket 14 is located at a position slightly closer to the rear end than the first sprocket 14 arranged at the front end portion in the case 12. Is provided. The output sprocket 36 is attached to the output shaft 35 of the motor 34 so as to rotate integrally. Further, at the front end portion of the case 12, the transmission sprocket 37 is supported so as to rotate integrally with the portion of the first rotating shaft 13 that rotates integrally with the first sprocket 14 so as to project outward from the case 12. A transmission chain 38 is wound between the output sprocket 36 and the transmission sprocket 37. Then, as the motor 34 rotates, the chain 24 orbits when the first sprocket 14 rotates in the clockwise direction indicated by the arrow in FIG. 1 together with the transmission sprocket 37.

As shown in FIGS. 1 and 2, the left wall portion 12c and the right wall portion 12d of the case 12 of the chain type conveyor 11 are provided with a plurality of air injection portions 39, 40 for injecting air into the case 12. ing. That is, the plurality of air injection portions 39 of the left wall portion 12c and the plurality of air injection portions 40 of the right wall portion 12d are the lower path portion 30 and the lower path portion 30 on the left side surface 19 and the right side surface 20 of the inner surface of the case 12. The upper path portion 31 is provided at each of a plurality of locations spaced apart in the extending direction. Incidentally, the plurality of air injection portions 39 provided on the left side surface 19 and the plurality of air injection portions 40 provided on the right side surface 20 alternate in the direction in which the lower path portion 30 and the upper path portion 31 extend. It is provided so as to be located, that is, to be efficiently arranged from the upstream side to the downstream side.

The air injection portions 39 and 40 are tubular members whose tip sides are attached to the left wall portion 12c and the right wall portion 12d of the case 12 so as to be in an oblique posture, and to the base end located outside the case 12. Is connected to the air injection units 39 and 40 with air supply members 41 and 42 including hoses and the like that supply compressed air from an air supply source such as an air pump (not shown). The tips of the air injection portions 39, 40 are formed as injection ports 43, 44 capable of injecting air into the case 12 by opening to the left side surface 19 and the right side surface 20, which correspond to each other.

Incidentally, the air injection units 39 and 40 that inject air into the internal space above the partition plate 21 in the case 12 are also air injection units that inject air into the internal space below the partition plate 21 in the case 12. The configurations and functions of 39 and 40 are the same. Therefore, in the following, the lower air injection portions 39 and 40 that inject air toward the internal space below the partition plate 21 in the case 12 shown in FIG. 2 will be described as a representative example. Duplicate description of the upper air injection portions 39 and 40 that inject air toward the internal space above the partition plate 21 will be omitted.

As shown in FIG. 2, among the inner surfaces along the length direction of the case 12, the left and right side surfaces 19 and 20 which are surfaces other than the bottom surface 17 and the ceiling surface of the lower path portion 30 which is also the lower surface 22 of the partition plate 21 When the object W to be transported is pushed and conveyed by the push plate 28 of the chain 24, the fine powder-like dust 45 that has soared into the case 12 may adhere to the case 12. The air injection portions 39 and 40 blow off the dust 45 of the transported object W adhering to the lower surface 22 of the partition plate 21 which is the ceiling surface of the lower path portion 30 and the left and right side surfaces 19 and 20 in the case 12. The air that can be removed is injected, and the injection direction 46 of the air from the injection ports 43 and 44 is set as follows.

As shown in FIGS. 2 and 3, the air injection units 39 and 40 partition the air injection portions 39 and 40 after the air injected from the injection ports 43 and 44 is sprayed from diagonally below to the lower surface 22 of the partition plate 21. The injection direction 46 of the air is set so that the air flows from the lower surface 22 of the plate 21 toward the left and right side surfaces 19 and 20 with a constant spread of air 47. That is, the air injected from the injection ports 43 and 44 of the air injection portions 39 and 40 is a partition which is a surface other than the bottom surface 17 in the case 12, the left and right side surfaces 19 and 20, and the ceiling surface of the lower path portion 30. After being sprayed from diagonally below the lower surface 22 of the partition plate 21, which is one surface of the lower surface 22 of the plate 21, the air flows toward the left and right side surfaces 19 and 20 which are the other surfaces.

Further, as shown in FIG. 1, dust 45 can be discharged from the inside of the case 12 to the outside of the case 12 at a position on the upper wall portion 12a of the case 12 above the second sprocket 16 on the rear end side. A dust discharge unit 48 is provided. The dust discharge portion 48 is a tubular member whose one end is connected so as to open into the case 12, and a suction mechanism including a suction pump (not shown) is connected to the other end. In the air injection portions 39 and 40 provided on the left side surface 19 and the right side surface 20 of the case 12, the air injected from the injection ports 43 and 44 is also the lower surface 22 of the partition plate 21. After being sprayed on the ceiling surface of the side path portion 30, the air injection direction 46 is set so as to flow toward the rear side of the case 12 where the dust discharge portion 48 is located.

Specifically, as shown in FIGS. 2 and 3, in the air injection portions 39 and 40, the air injected from the injection ports 43 and 44 is the lower surface of the partition plate 21 which is the ceiling surface of the lower path portion 30. The air injection direction 46 is set so that the air is sprayed from a position diagonally downward in the front and side of the case 12 with respect to the central portion in the left-right direction of the 22. That is, the air injected from the air injection portions 39 and 40 is a partition plate that is a ceiling surface when the side of the lower path portion 30 in the case 12 where the dust discharge portion 48 is located is the rear side in the front-rear direction. The air is sprayed from a position diagonally downward and diagonally laterally in the front of the case 12 with respect to the lower surface 22 of 21 from an oblique direction intersecting the front-rear direction, the left-right direction, and the up-down direction.

Incidentally, in the case of the present embodiment, the air injection directions 46 from the injection ports 43 and 44 of the air injection portions 39 and 40 are, for example, on the side surfaces 19 and 20 of the case 12 when viewed from the front in FIG. It is set so as to be tilted into the case 12 by 65 degrees with respect to a straight line in the vertical direction along the line. Similarly, the air injection direction 46 from each of the injection ports 43 and 44 is, as an example, only 50 degrees with respect to the straight line in the front-rear direction along the side surfaces 19 and 20 of the case 12 when viewed from above in FIG. While the case 12 is tilted inward, the case 12 is set to be tilted forward by 40 degrees with respect to a straight line in the left-right direction orthogonal to the side surfaces 19 and 20 of the case 12.

Hereinafter, the operation of this embodiment will be described.
As shown in FIG. 4, a plurality of left air injection portions 39 provided on the left side surface 19 of the case 12, and a plurality of right air injection portions 40 provided on the right side surface 20 of the case 12. However, when air is injected from the respective injection ports 43 and 44 at the same time, the result is as follows. For example, the air injected from the air injection unit 39 on the left side is oblique forward with respect to the central portion in the left-right direction on the lower surface 22 of the partition plate 21 which is the ceiling surface in the case 12, as shown by an arrow in FIG. After being sprayed from a position that is downward and diagonally to the left, it flows diagonally to the right from the lower surface 22 to the rear side that is the downstream side, and reaches the right side surface 20.

At this time, the air injected from the air injection unit 39 on the left side flows diagonally to the right from the lower surface 22 of the partition plate 21 which is the ceiling surface in the case 12 to the rear side which is the downstream side, and reaches the side surface 20 on the right side. Then, the dust 45 adhering to the lower surface 22 of the partition plate 21 which is the ceiling surface is blown to the downstream side within the range of the spread 47 shown by the alternate long and short dash line in FIG. Then, after reaching the right side surface 20, it flows further downstream along the right side surface 20, or bounces diagonally to the left side from the side surface 20 to the downstream side and is sprayed on the opposite left side surface 19. After that, it flows further downstream along the left side surface 19. Then, in the process of air flowing downstream along the left side surface 19 and the right side surface 20 in this way, the dust 45 adhering to the left side surface 19 and the right side surface 20 is blown off to the downstream side. That is, the air injected from the air injection unit 39 on the left side removes the dust 45 adhering to a plurality of surfaces such as the lower surface 22 and the side surfaces 19 and 20 of the partition plate 21 which is the ceiling surface.

Here, the strength of the air flow injected from the injection ports 43 and 44 of the air injection portions 39 and 40 is the strongest immediately after being injected from the injection ports 43 and 44, and then the partition plate 21 which is the ceiling surface. It gradually becomes weaker as it flows from the lower surface 22 of the surface to the left and right side surfaces 19 and 20. Therefore, in FIG. 4, the air that is injected from the left and right air injection portions 39 and 40 and then flows further downstream along the left and right side surfaces 19 and 20 is in the flow direction of the air along the side surfaces 19 and 20. It is drawn into the relatively strong air flow immediately after being injected from the other air injection units 39 and 40 located on the downstream side. Then, it joins the air immediately after being injected from the other air injection portions 39 and 40 located on the downstream side, flows diagonally to the rear side on the downstream side, and is sprayed on the opposite side surfaces 19 and 20. Be done.

Therefore, as shown in FIG. 4, on the left and right side surfaces 19 and 20 in the case 12, the air injection unit 39 is located in a certain surface region continuous downstream from the position where the air injection units 39 and 40 are provided. After being injected from the 40, the air flow that tends to flow to the downstream side along the left and right side surfaces 19 and 20 does not reach. As a result, the dust 45 adhering to a certain surface region on the side surfaces 19 and 20 cannot be removed by injecting air from the air injection units 39 and 40.

Therefore, in the present embodiment, as shown in FIGS. 5 and 6, instead of injecting air from the left air injection unit 39 and the right air injection unit 40 at the same time, the left air injection unit 39 and the right side air injection unit 39 are not injected at the same time. Air is alternately injected from the air injection unit 40 on the left and right sides. In this case, the plurality of left air injection portions 39 provided on the left side surface 19 at regular intervals and the plurality of right air injection portions 40 provided on the right side surface 20 at regular intervals are in the front-rear direction. Each of the predetermined number of adjacent air injection units 39 and 40 injects air alternately on the left and right sides. As an example, the plurality of left side air injection units 39 and the plurality of right side air injection units 40 are arranged to alternately inject air on the left and right sides of each of the three air injection units 39 and 40 adjacent to each other in the front-rear direction. ing.

First, as shown in FIG. 5, as an example, air is injected into the case 12 from three air injection units 39 adjacent to each other in the front-rear direction among the plurality of left air injection units 39. Then, as shown by the arrows in FIG. 5, the air injected from each air injection unit 39 flows diagonally to the right from the lower surface 22 of the partition plate 21 which is the ceiling surface in the case 12 to the rear side which is the downstream side. It reaches the first position P1 on the right side surface 20. Then, at this time, the dust 45 adhering to the lower surface 22 of the partition plate 21 which is the ceiling surface in the case 12 is blown to the downstream side by the air injected from the air injection portion 39 on the left side. Then, the air that has reached the first position P1 of the right side surface 20 flows further downstream from the first position P1 along the right side surface 20, or diagonally to the left side from the first position P1 to the downstream side. After rebounding to reach the second position P2 on the left side surface 19 on the opposite side, the air flows further downstream along the left side surface 19.

At this time, among the air injected from the left air injection unit 39 and reaching the first position P1 on the right side surface 20, the air flowing further downstream along the right side surface 20 is in the flow direction. Since the air injection unit 40 on the right side located on the downstream side has stopped injecting air, the air passes through the position of the air injection unit 40 on the right side and flows further to the downstream side. That is, as shown in FIG. 5, the air that has passed the position of the air injection unit 40 on the right side reaches the third position P3, which is separated from the position of the air injection unit 40 on the right side by a predetermined distance to the downstream side.

Then, the air that has reached the first position P1 of the right side surface 20 after being injected from the left air injection unit 39 in this way is along the right side surface 20 from the first position P1 to the third position P3 on the downstream side. In the process up to this point, the dust 45 adhering to the surface region from the first position P1 to the third position P3 on the right side surface 20 is blown off to the downstream side. As shown in FIG. 5, the air injected from the air injection portion 39 on the left side, reaching the first position P1 on the side surface 20 on the right side, and then flowing further downstream along the side surface 20 on the right side is When it reaches the third position P3 on the downstream side, the flowing force is attenuated and the flow to the downstream side of the third position P3 is stopped. Therefore, the dust 45 adhering to a certain surface region continuous downstream from the third position P3 on the right side surface 20 in the case 12 is not blown off by the air injected from the left air injection unit 39. It remains attached to the right side surface 20.

On the other hand, of the air injected from the left air injection unit 39 and reaching the first position P1 on the right side surface 20, the air bounces diagonally to the left from the right side surface 20 to the downstream side and is the second on the left side surface 19. A part of the air reaching the position P2 bounces diagonally backward toward the right side surface 20, but most of the air flows further downstream along the left side surface 19. Then, on the left side surface 19, the distance corresponding to the distance between the injection port 44 of the right air injection unit 40 on the right side surface 20 and the third position P3 on the downstream side of the injection port 44 is further downstream. When it reaches the fourth position P4 which is separated from the side, the flow of the air is attenuated and the flow to the downstream side of the fourth position P4 is stopped. Therefore, the dust 45 adhering to a certain surface region continuous downstream from the fourth position P4 on the left side surface 19 in the case 12 is not blown off by the air injected from the left air injection unit 39. It remains attached to the left side surface 19.

As shown in FIG. 5, the left side of a certain surface region between the injection port 43 of the left air injection unit 39 on the left side surface 19 and the second position P2 on the downstream side of the injection port 43 is on the left side. The air injected from the air injection unit 39 of the above does not flow. Therefore, the dust 45 adhering to a certain surface region from the injection port 43 to the second position P2 is not blown off by the air injected from the air injection unit 39 on the left side, but adheres to the side surface 19 on the left side thereof. Be left alone. Therefore, in order to remove the dust 45 that is not blown off by the air injected from the left air injection unit 39 and remains attached to the plurality of locations on the left side surface 19 and the right side surface 20, this time, a plurality of dusts are removed. Air is injected into the case 12 from three air injection units 40 adjacent to each other in the front-rear direction among the air injection units 40 on the right side.

Then, as shown by arrows in FIG. 6, the air injected from each air injection unit 40 on the right side is obliquely to the left side from the lower surface 22 of the partition plate 21 which is the ceiling surface in the case 12 to the rear side which is the downstream side. It flows to reach the left side surface 19. Incidentally, in the present embodiment, the air injected from each air injection unit 40 on the right side at this time is blown from diagonally forward on the right side with respect to the fourth position P4 on the left side surface 19, but upstream of the fourth position P4. It may be sprayed on the side position. At this time, the dust 45 adhering to the lower surface 22 of the partition plate 21 which is the ceiling surface in the case 12 is blown downstream by the air injected from each air injection unit 40. Then, the air that has reached the fourth position P4 of the left side surface 19 flows further downstream along the left side surface 19 from the fourth position P4, or diagonally to the right side from the fourth position P4 to the downstream side. After rebounding to reach the third position P3 on the right side surface 20 on the opposite side, the air flows further downstream along the right side surface 20.

At this time, among the air injected from each air injection unit 40 on the right side and reaching the fourth position P4 on the left side surface 19, the air flowing further downstream along the left side surface 19 is in the flow direction. Since the air injection unit 39 on the left side located on the downstream side of the air injection unit 39 has stopped injecting air, the air flows past the position of the air injection unit 39 on the left side and further downstream. That is, as shown in FIG. 6, the air that has passed the position of the air injection unit 39 on the left side reaches the second position P2 that is separated from the position of the air injection unit 39 on the left side by a predetermined distance to the downstream side.

Then, the air that has reached the fourth position P4 of the left side surface 19 after being injected from the right air injection unit 40 in this way is along the left side surface 19 from the fourth position P4 to the second position P2 on the downstream side. In the process up to this point, the dust 45 adhering to the surface region from the fourth position P4 to the second position P2 on the left side surface 19 is blown off to the downstream side. Therefore, the dust 45 remaining in the surface region from the fourth position P4 to the second position P2 on the left side surface 19 which could not be removed by the air injection from the left air injection unit 39 last time is also removed.

On the other hand, of the air injected from the right air injection unit 40 and reaching the fourth position P4 on the left side surface 19, the air bounces diagonally to the right from the left side surface 19 to the downstream side and is the third on the right side surface 20. A part of the air reaching the position P3 bounces diagonally backward toward the left side surface 19, but most of the air flows further downstream along the right side surface 20. That is, on the right side surface 20, the first position further downstream is a distance corresponding to the distance between the third position P3 and the injection port 44 of the air injection unit 40 on the upstream side of the third position P3. It flows to position P1.

Then, after being injected from the air injection unit 40 on the right side, the air that bounces diagonally to the right from the side surface 19 on the left side to the downstream side and reaches the third position P3 on the side surface 20 on the right side is the air on the side surface 20 on the right side. In the process of flowing through the surface region from the third position P3 to the first position P1 on the downstream side, the dust 45 adhering to the surface region is blown off to the downstream side. Therefore, the dust 45 remaining in the surface region from the third position P3 to the first position P1 on the right side surface 20 that could not be removed by the previous air injection from the left air injection unit 39 is also removed. When the air flowing from the third position P3 to the downstream first position P1 along the right side surface 20 after being injected from the right air injection unit 40 reaches the first position P1, the air flows. As for the air flow, the flowing force is attenuated and the flow to the downstream side of the first position P1 is stopped.

Then, next to the three left-hand air injection parts 39 that are adjacent to each other in the front-rear direction when air is injected into the case 12 for the first time, the other three left-side air injection parts 39 that are adjacent to each other in the front-rear direction on the downstream side. Air is injected into the case 12 to remove the dust 45 from the inside of the case 12 and blow it to the downstream side where the dust discharge portion 48 is located in the same manner as the first time. Then, next to the three right-sided air injection units 40 that are adjacent to each other in the front-rear direction by injecting air into the case 12 for the second time, the other three right-side air injection units 40 that are adjacent to each other in the front-rear direction on the downstream side. Air is injected into the case 12 to remove the dust 45 from the inside of the case 12 and blow it to the downstream side where the dust discharge portion 48 is located in the same manner as the second time.

Then, by alternately injecting air into the case 12 by the left air injection unit 39 and the right air injection unit 40, the left and right side surfaces 19 which are inner surfaces other than the bottom surface 17 of the inner surface of the case 12. , 20 and the dust 45 adhering to the lower surface 22 of the partition plate 21 which is the ceiling surface are removed without manual work. In the above, the configuration and operation of the lower air injection portions 39 and 40 that inject air toward the internal space below the partition plate 21 in the case 12 have been described, but the partition plate in the case 12 has been described. The air injection units 39 and 40 on the upper side, which inject air toward the internal space above 21, have the same configuration and perform the same operation.

Hereinafter, the effects of the above embodiment will be described.
(1) Of the inner surfaces along the length direction of the case 12, the left and right side surfaces 19 which are inner surfaces other than the bottom surface 17 on which the object to be transported W, which is pushed by the push plate 28 of the chain 24 and is conveyed, slides in the case 12. , 20 and air is injected from the air injection portions 39 and 40 onto the lower surface 22 of the partition plate 21 which is an example of the ceiling surface. Therefore, even if the dust 45 soared in the case 12 is attached to the lower surface 22 and the side surfaces 19 and 20 of the partition plate 21 which is the ceiling surface in the case 12, the dust 45 is air. It is removed by the air injected from the injection units 39 and 40. Therefore, of the inner surface of the case 12, the dust 45 adhering to the surface region where the object W to be transported, which is pushed by the push plate 28 of the chain 24 and is not slid, can be easily removed without manual work. Can be removed.

(2) Of the inner surfaces along the length direction of the case 12, the dust 45 adhering to the left and right side surfaces 19 and 20 and the lower surface 22 of the partition plate 21 which is an example of the ceiling surface is shared by the two surfaces. It can be removed by the air injected from the air injection portions 39 and 40 toward one surface.

(3) The dust 45 removed from the surfaces other than the bottom surface 17 in the case 12 by the air injected from the air injection portions 39 and 40 rides on the air flow in the case 12 in the direction in which the dust discharge portion 48 is located. It is blown toward. Therefore, the dust 45 removed from the inner surface of the case 12 by the air injected from the air injection units 39 and 40 can be discharged to the outside of the case 12 by utilizing the air flow toward the dust discharge unit 48.

(4) The air blown diagonally downward from the front side and diagonally laterally onto the lower surface 22 of the partition plate 21, which is an example of the ceiling surface in the case 12, is after becoming downstream from the lower surface 22. It flows diagonally to the side and reaches the sides 19 and 20. Then, after that, it flows further downstream along the side surfaces 19 and 20, or bounces diagonally from the side surfaces 19 and 20 to the downstream side and is sprayed on the opposite side surfaces 19 and 20. Therefore, the dust 45 can be efficiently removed from the surface other than the bottom surface 17 in the case 12 by the air injected from the air injection portions 39 and 40, and the dust 45 thus removed can be removed from the upstream side in the case 12. Utilizing the flow of air flowing to the downstream side, it can be efficiently blown toward the dust discharge unit 48.

(5) When the side of the lower path portion 30 in the case 12 where the dust discharge portion 48 is located is the downstream side, a plurality of air injection portions 39 that inject air that can remove the dust 45 from the inner surface of the case 12. , 40 can be efficiently arranged from the upstream side in the case 12 to the downstream side where the dust discharge portion 48 is located.

In addition, this embodiment can be implemented by changing as follows. In addition, the present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

-When injecting air alternately from the air injection unit 39 on the left side and the air injection unit 40 on the right side, every two or four other than every three adjacent in the front-rear direction, every other predetermined number, etc. Air may be alternately injected from the left and right air injection units 39 and 40. Further, in this case, the left and right air injection units 39 and 40 may be alternately injected from the upstream side to the downstream side one by one from the injection ports 43 and 44, or either the left or right air injection unit may be injected. Air may be injected from all of 39 and 40, and then air may be injected from all of the left and right air injection units 39 and 40.

The air injection units 39 and 40 may be configured by, for example, a pneumatic cylinder as long as air for blowing off the dust 45 adhering to the inner surface of the case 12 can be injected into the case 12.

The air injection section 39 on the left side and the air injection section 40 on the right side do not necessarily have to be arranged alternately in the direction in which the path section such as the lower path section 30 extends.
A plurality of air injection portions 39 and 40 are spaced apart from the ceiling surface 18 of the case 12 and the lower surface 22 of the partition plate 21 which is also an example of the ceiling surface in the direction in which the upper path portion 31 and the lower path portion 30 extend. The configuration may be provided at each location. In this case, the air injected from the air injection portions 39 and 40 is blown from a position diagonally downward in front of the ceiling surface 18 and the lower surface of the partition plate 21, and diagonally forward with respect to the side surfaces 19 and 20. It is preferable to spray from a position that is upward and diagonally lateral.

The air injection portions 39 and 40 are provided on the ceiling surface 18 of the case 12, the lower surface 22 of the partition plate 21 which is also an example of the ceiling surface, and the left side surface 19 and the right side surface 20 of the case 12, respectively. Dedicated air injection units 39 and 40 may be provided on each inner surface.

The dust discharge portion 48 may be formed of an opening formed at the rear end portion of the case 12 in the front-rear direction.
In the above embodiment, the partition plate 21 whose lower surface 22 constitutes the ceiling surface of the lower path portion 30 is omitted, and instead, a rail member which runs when the chain 24 moves through the upper path portion 31 is provided. It may be provided at a position in the case 12 that is intermediate in the vertical direction. In this case, the ceiling surface on the inner surface of the case 12 along the length direction is only the ceiling surface 18 formed by the inner surface of the upper wall portion 12a of the case 12. Therefore, in the above embodiment, the lower air injection portions 39 and 40 having a structure for injecting air into the internal space below the partition plate 21 in the case 12 may be omitted.

11 ... Chain type conveyor, 12 ... Case, 17 ... Bottom surface, 18 ... Ceiling surface, 19, 20 ... Side surface, 22 ... Lower surface of partition plate which is an example of ceiling surface, 23 ... Upper surface of partition plate which is an example of bottom surface , 24 ... chain, 28 ... push plate, 30 ... lower path section, 31 ... upper path section, 39, 40 ... air injection section, 45 ... dust, 48 ... dust discharge section, W ... object to be transported.

Claims (5)

A case whose inner surface includes a bottom surface, a ceiling surface, and left and right side surfaces,
An endless chain that orbits the inside of the case along a circular path including a path portion along the bottom surface.
A push plate that conveys the object to be conveyed while pushing it along the bottom surface when moving the path portion along with the orbital movement of the chain while being attached to the chain.
An air injection unit that injects air that can remove dust of the object to be transported adhering to the inner surface of the case other than the bottom surface.
A chain type conveyor characterized by being equipped with. The air injection unit is such that the air is sprayed obliquely from one of the ceiling surface and the side surface other than the bottom surface and then flows from the one surface to the other surface. The chain type conveyor according to claim 1, wherein the injection direction of the air is set. The case is provided with a dust discharging part that enables the dust to be discharged from the inside of the case, and the air injection part is in the direction in which the dust discharging part is located after the air is blown to a surface other than the bottom surface. The chain type conveyor according to claim 1 or 2, wherein the injection direction of the air is set so as to flow toward the air. When the side of the path portion in the case where the dust discharge portion is located is the rear side in the front-rear direction, the air injection portion is oblique in front of the ceiling surface in the case. The chain according to claim 3, wherein the air injection direction is set so that the air is sprayed from a diagonal direction that intersects the front-rear direction, the left-right direction, and the up-down direction from a position that is downward and diagonally sideways. Type transfer conveyor. The air injection portions are provided at a plurality of locations spaced apart in the direction in which the path portions extend on the left side surface and the right side surface, and the plurality of air injection portions provided on the left side surface and the right side are provided. Any one of claims 1 to 4, wherein a plurality of the air injection portions provided on the side surface of the above are provided so as to be alternately positioned in a direction in which the path portion extends. The chain type transfer conveyor described in.

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